CN103891316B

CN103891316B - Session method, the apparatus and system of distributed mobile management

Info

Publication number: CN103891316B
Application number: CN201280004180.XA
Authority: CN
Inventors: 何宁; 朱雷
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2012-09-21
Filing date: 2012-09-21
Publication date: 2017-11-28
Anticipated expiration: 2032-09-21
Also published as: WO2014043901A1; CN103891316A

Abstract

The embodiment of the invention discloses a kind of session method, the apparatus and system of distributed mobile management, it is related to communication technical field, solves the problems, such as that the conversation procedure cost of existing mobile management is higher.Methods described includes：The first router is that mobile node device distributes the first IP address, and obtains the second IP address before mobile node device and the 3rd IP address of communication node；Receive the first session data bag that mobile node device is sent；Using the first IP address as source IP address the first session data bag and the second IP address are sent to communication node；Receive second session data bag of the communication node using the first IP address as purpose IP address；The second session data bag is directly sent to mobile node device using the second IP address as purpose IP address；Or send the second session data bag and the second IP address to mobile node device.The present invention is suitable for distributed mobility management systems.

Description

Session method, the apparatus and system of distributed mobile management

Technical field

The present invention relates to communication technical field, more particularly to a kind of session method of distributed mobile management, device and System.

Background technology

Distributed mobile management be in order to solve the problems such as Single Point of Faliure of centralized mobile management, route redundancy and It is proposed.In distributed mobile management, typically by mobile node (Mobile Node, abbreviation MN) the first jumper connection approach By device (First-hop Access Router, abbreviation AR), as mobile anchor point, mobile management function to ps domain is performed, such as：Move Dynamic user position update, regularly update, authenticate, access of start shooting, shut down to exit identifies etc. with equipment.When MN is moved to current connect When entering router (New Access Router, abbreviation nAR), it can adhere under nAR, now nAR can be that MN redistributes interconnection FidonetFido (Internet Protocol, abbreviation IP) address, so that when MN initiates session in nAR networks, can be applied NAR is that the IP address of MN distribution and communication node (Correspondent Node, abbreviation CN) carry out data interaction.Currently, if In couple in routers (Previous Access Router, abbreviation pAR) of the MN before one, the pAR is the MN points IP address is matched somebody with somebody, MN enters in nAR networks after session has been initiated in pAR networks, now if what MN was initiated in pAR networks Session is using the IP address that nAR is MN distribution, the conversation that MN will be caused to be initiated in pAR networks.

During the embodiment of the present invention is realized, inventor has found that at least there are the following problems in the prior art：

Currently in order to ensure that the session that MN is initiated in pAR networks is not interrupted, it is necessary between pAR networks and nAR networks Communication tunnel is established, or communication tunnel is established to complete between CN and nAR networks, establishing communication tunnel needs very great achievement This, cause whole distributed mobile management conversation procedure cost it is higher the problem of.

The content of the invention

Embodiments of the invention provide a kind of session method, the apparatus and system of distributed mobile management, can solve the problem that The problem of conversation procedure cost of whole distributed mobile management is higher in the prior art.

To reach above-mentioned purpose, the present invention adopts the following technical scheme that：

In a first aspect, the embodiment of the present invention provides a kind of session method of distributed mobile management, including：

The first router is that mobile node device distributes the first IP address；

The first router obtains the second IP address and the 3rd IP address of communication node, wherein second IP The second router at place is what the mobile node device distributed before location is the mobile node device；

The first router receives the first session data bag that the mobile node device is sent；

The first router sends first meeting using first IP address as source IP address to the communication node Talk about packet, and second IP address be sent to the communication node, with cause the communication node receive it is described After first session data bag, using second IP address as final source IP address, and by the first session data bag and institute State the upper strata that the second IP address is delivered to the IP layers of communication node；

The first router receives the communication node using the 3rd IP address as source IP address, using the first IP address as mesh IP address the second session data bag；

The second session data bag is directly sent to by the first router using the second IP address as purpose IP address The mobile node device, to cause the mobile node device after the second session data bag is received, with described Two IP address are final purpose IP address, and the second session data bag and second IP address are delivered into movable joint The upper strata of the IP layers of point device；Or

The first router sends the second session data bag to the mobile node device, and by second IP address The mobile node device is sent to, to cause the mobile node device after the second session data bag is received, with Second IP address is final purpose IP address, and the second session data bag and second IP address are delivered to The upper strata of the IP layers of mobile node device.

With reference to described in a first aspect, in the first implementation of the first aspect, the first router receives The first session data bag that the mobile node device is sent, including：

The first router receives the mobile node device using second IP address as source IP address, with described the Three IP address are the first session data bag of purpose IP address.

With reference to the first described implementation, in second of implementation of the first aspect, in the first via Before the first session data bag being sent from device to the communication node as source IP address using first IP address, including：

The first router replaces the source IP address field in the first session data bag with first IP address Second IP address at place.

With reference to described in a first aspect, in the third implementation of the first aspect, the first router receives The first session data bag that the mobile node device is sent, including：

The first router receives the mobile node device using first IP address as source IP address, with described the Three IP address are the first session data bag of purpose IP address.

With reference to the third described implementation, in the 4th kind of implementation of the first aspect, in the first via The mobile node device is received using first IP address as source IP address by device, using the 3rd IP address as purpose IP Before first session data bag of location, including：

The first router receives the router request message that the mobile node device is sent, the router solicitation The first flag bit is carried in message, first flag bit is the first numerical value, and first numerical value is used to represent the movable joint Point device will carry out the transmission of the first session data bag using first IP address as source IP address；

The first router establishes binding relationship, the agency by agent binding update messages and the communication node First flag bit, the first IP address and the second IP address are carried in binding update messages；

The first router receives the agency relative to the agent binding update messages that the communication node is sent Response message is bound, the agent binding response message is used to represent that the communication node agrees to the mobile node device with institute State the transmission that the first IP address carries out the first session data bag for source IP address.

With reference to described in a first aspect, the first described implementation, second of implementation, the third implementation and Any one in four kinds of implementations, in the 5th kind of implementation of the first aspect, the first router obtains 3rd IP address of the second IP address and communication node, including：

The first router obtains the session information of the mobile node device, the concentration by a centralized device Formula device is used for the session information for recording the mobile node device, and the session information includes the body of the mobile node device Part mark, second IP address and the 3rd IP address.

With reference to described in a first aspect, the first described implementation, second of implementation, the third implementation and Any one in four kinds of implementations, in the 6th kind of implementation of the first aspect, the first router obtains 3rd IP address of the second IP address and communication node, including：

The first router obtains the session information of the mobile node device, the session to the second router Information includes identity tag, second IP address and the 3rd IP address of the mobile node device.

With reference to described in a first aspect, the first described implementation, second of implementation, the third implementation and Any one in four kinds of implementations, in the 7th kind of implementation of the first aspect, the first router obtains 3rd IP address of the second IP address and communication node, including：

The first router obtains session information at the mobile node device, and the session information includes the shifting Identity tag, second IP address and the 3rd IP address of dynamic node apparatus.

Second aspect, the embodiment of the present invention provide a kind of session method of distributed mobile management, including：

Mobile node device is after being attached in the first router, with receiving the first IP of the first router distribution Location；

The mobile node device to the first router send the first session data bag, with cause the first via by Device using first IP address is source IP address sends the first session data bag to communication node, and by the mobile node Second IP address of the second router where before device is sent to the communication node, and then the communication node is existed After receiving the first session data bag, using second IP address as final source IP address, and by first session Packet and second IP address are delivered to the upper strata of the IP layers of communication node；

The mobile node device receive that the first router sends using second IP address as purpose IP address The second session data bag；Or

The mobile node device receives the second session data bag and the 2nd IP that the first router is sent Address；

The mobile node device is after the second session data bag is received, using second IP address to be final Purpose IP address, and the second session data bag and second IP address are delivered to the upper of the IP layers of mobile node device Layer.

With reference to the second aspect, in the first implementation of the second aspect, the mobile node device to The first router sends the first session data bag, including：

The mobile node device is using second IP address as source IP address, using the 3rd IP address as purpose IP Location sends the first session data bag to the first router.

With reference to the second aspect, in second of implementation of the second aspect, the mobile node device to The first router sends the first session data bag, including：

The mobile node device is using first IP address as source IP address, using the 3rd IP address as purpose IP Location sends the first session data bag to the first router.

With reference to second of implementation, in the third implementation of the second aspect, in the movable joint Point device is purpose IP address to the first router using the 3rd IP address using first IP address as source IP address Before sending the first session data bag, including：

The mobile node device sends router request message, the router request message to the first router In carry the first flag bit, first flag bit is the first numerical value, and first numerical value is used to represent that the movable joint is decorated The transmission of the first session data bag will be carried out using first IP address as source IP address by putting.

The third aspect, the embodiment of the present invention provide a kind of the first router, including：

First allocation unit, for distributing the first IP address for mobile node device；

First acquisition unit, for obtaining the 3rd IP address of the second IP address and communication node, wherein described second The second router at place is what the mobile node device distributed before IP address is the mobile node device；

First receiving unit, the first session data bag sent for receiving the mobile node device；

First transmitting element, for leading to using the first IP address that first allocation unit is distributed as source IP address to described Letter node sends the first session data bag that first receiving unit receives, and that the first acquisition unit is obtained Two IP address are sent to the communication node, to cause the communication node after the first session data bag is received, with Second IP address is final source IP address, and the first session data bag and second IP address is delivered to logical Believe the upper strata of the IP layers of node；

Second receiving unit, for receiving the communication node using the 3rd IP address as source IP address, with the first IP address For the second session data bag of purpose IP address；

First transmitting element, the second IP address for being additionally operable to directly obtain using the first acquisition unit is purpose IP The second session data bag that address receives second receiving unit is sent to the mobile node device, described to cause Mobile node device is after the second session data bag is received, using second IP address as final purpose IP address, And the second session data bag and second IP address are delivered to the upper strata of the IP layers of mobile node device；Or

First transmitting element, it is additionally operable to send what second receiving unit received to the mobile node device Second session data bag, and the second IP address that the first acquisition unit is obtained is sent to the mobile node device, with So that the mobile node device is after the second session data bag is received, using second IP address as final purpose IP address, and the second session data bag and second IP address are delivered to the upper strata of the IP layers of mobile node device.

With reference to the third aspect, in the first implementation of the third aspect, first receiving unit, have Body is used for：

The mobile node device is received using second IP address as source IP address, for the purpose of the 3rd IP address First session data bag of IP address.

With reference to the first described implementation, in second of implementation of the third aspect, in addition to：

First replacement unit, the first IP address for being distributed with first allocation unit are replaced described first and receive list The second IP address at source IP address field in the first session data bag that member receives.

With reference to the third aspect, in the third implementation of the third aspect, first receiving unit, have Body is used for：

The mobile node device is received using first IP address as source IP address, for the purpose of the 3rd IP address First session data bag of IP address.

With reference to the third described implementation, in the 4th kind of implementation of the third aspect, in addition to：

3rd receiving unit, the router request message sent for receiving the mobile node device, the router The first flag bit is carried in request message, first flag bit is the first numerical value, and first numerical value is used to represent the shifting Dynamic node apparatus will carry out the transmission of the first session data bag using first IP address as source IP address；

First binding unit, for after the 3rd receiving unit receives router request message, being tied up by agency Determine new information and establish binding relationship with the communication node, indicate in the agent binding update messages with described first Position, the first IP address and the second IP address；

4th receiving unit, the generation sent relative to first binding unit sent for receiving the communication node The agent binding response message of binding update messages is managed, the agent binding response message is used to represent that the communication node is agreed to The mobile node device carries out the transmission of the first session data bag using first IP address as source IP address.

With reference to the third aspect, the first described implementation, second of implementation, the third implementation and Any one in four kinds of implementations, in the 5th kind of implementation of the third aspect, the first acquisition unit：

Session information specifically for obtaining the mobile node device by a centralized device, the centralized device For recording the session information of the mobile node device, the session information includes the identity mark of the mobile node device Will, second IP address and the 3rd IP address.

With reference to the third aspect, the first described implementation, second of implementation, the third implementation and Any one in four kinds of implementations, in the 6th kind of implementation of the third aspect, the first acquisition unit：

Session information specifically for obtaining from the mobile node device to the second router, the session information bag Include identity tag, second IP address and the 3rd IP address of the mobile node device.

With reference to the third aspect, the first described implementation, second of implementation, the third implementation and Any one in four kinds of implementations, in the 7th kind of implementation of the third aspect, the first acquisition unit：

Specifically for obtaining session information at the mobile node device, the session information includes the mobile node The identity tag of device, second IP address and the 3rd IP address.

Fourth aspect, the embodiment of the present invention provide a kind of mobile node device, including：

First receiving unit, for after being attached in the first router, receiving the first of the first router distribution IP address；

First transmitting element, for sending the first session data bag to the first router, to cause the first via From device using first IP address be source IP address sends the first session data bag to communication node, and by the movable joint Second IP address of the second router where before point device is sent to the communication node, and then causes the communication node After the first session data bag is received, using second IP address as final source IP address, and by first meeting Words packet and second IP address are delivered to the upper strata of the IP layers of communication node；

Second receiving unit, for receiving that the first router sends using second IP address as purpose IP address The second session data bag；Or

For receiving the second session data bag and second IP address that the first router is sent；

Unit is submitted, for using second IP address as final purpose IP address, and by second receiving unit The the second session data bag and second IP address received is delivered to the upper strata of the IP layers of mobile node device.

With reference to the fourth aspect, in the first implementation of the fourth aspect, first transmitting element, have Body is used for：

Using second IP address as source IP address, using the 3rd IP address as purpose IP address to the first via by Device sends the first session data bag.

With reference to the fourth aspect, in second of implementation of the fourth aspect, first transmitting element, have Body is used for：

Using first IP address as source IP address, using the 3rd IP address as purpose IP address to the first via by Device sends session data bag.

With reference to second of implementation, in the third implementation of the fourth aspect, in addition to：

Second transmitting element, for sending router request message to the first router, the router solicitation disappears The first flag bit is carried in breath, first flag bit is the first numerical value, and first numerical value is used to represent the mobile node Device will carry out the transmission of the first session data bag using first IP address as source IP address.

5th aspect, the embodiment of the present invention provide a kind of the first router, including：

First processor, for distributing the first IP address for mobile node device；

First receiver, for obtaining the 3rd IP address of the second IP address and communication node, wherein second IP The second router at place is what the mobile node device distributed before address is the mobile node device；

First receiver, it is additionally operable to receive the first session data bag that the mobile node device is sent；

First transmitter, for being source IP address to the communication section using the first IP address that the first processor distributes Point sends the first session data bag that first receiver receives, and the second IP address that first receiver is obtained is sent out The communication node is given, to cause the communication node after the first session data bag is received, with the 2nd IP Address is final source IP address, and the first session data bag and second IP address are delivered to the IP of communication node The upper strata of layer；

First receiver, it is additionally operable to receive the communication node using the 3rd IP address as source IP address, with the first IP Address is the second session data bag of purpose IP address；

First transmitter, the second IP address for being additionally operable to directly obtain using first receiver is purpose IP address The second session data bag that first receiver is received is sent to the mobile node device, to cause the movable joint Point device is after the second session data bag is received, using second IP address as final purpose IP address, and by institute State the second session data bag and second IP address be delivered to mobile node device IP layers upper strata；Or

First transmitter, it is additionally operable to described send what first receiver received to the mobile node device Second session data bag, and the second IP address that first receiver is obtained is sent to the mobile node device, so that The mobile node device is obtained after the second session data bag is received, using second IP address as final purpose IP Address, and the second session data bag and second IP address are delivered to the upper strata of the IP layers of mobile node device.

In terms of the described 5th, in the first implementation of the described 5th aspect, first receiver, specifically For：

With reference to the first described implementation, in second of implementation of the described 5th aspect, first processing Device, it is additionally operable to：

The first session number received with the first IP address replacement first receiver of first processor distribution According to the second IP address at the source IP address field in bag.

In terms of the described 5th, in the third implementation of the described 5th aspect, first receiver, specifically For：

With reference to the third described implementation, in the 4th kind of implementation of the described 5th aspect, described first receives Device, it is additionally operable to：

The router request message that the mobile node device is sent is received, first is carried in the router request message Flag bit, first flag bit are the first numerical value, and first numerical value is used to represent that the mobile node device will be with described First IP address is the transmission that source IP address carries out the first session data bag；

First transmitter, it is additionally operable to after first receiver receives router request message, passes through agency Binding update messages establish binding relationship with the communication node, indicate in the agent binding update messages with described first Position, the first IP address and the second IP address；

First receiver, is additionally operable to receive that the communication node sends is sent relative to first transmitter The agent binding response message of agent binding update messages, the agent binding response message are used to represent that the communication node is same The mobile node device of anticipating conversates the transmission of packet using first IP address as source IP address.

With reference to the described 5th aspect, the first described implementation, second of implementation, the third implementation and the Any one in four kinds of implementations, first receiver,

It is additionally operable to obtain the session information of the mobile node device by a centralized device, the centralized device is used In the session information for recording the mobile node device, the session information include the mobile node device identity tag, Second IP address and the 3rd IP address.

It is additionally operable to obtain the session information of the mobile node device to the second router, the session information includes The identity tag of the mobile node device, second IP address and the 3rd IP address.

It is additionally operable to obtain session information at the mobile node device, the session information is decorated including the movable joint Identity tag, second IP address and the 3rd IP address put.

6th aspect, the embodiment of the present invention provide a kind of mobile node device, including：

First receiver, for after being attached in the first router, receiving the first IP of the first router distribution Address；

First transmitter, for the first router send the first session data bag, with cause the first via by Device using first IP address is source IP address sends the first session data bag to communication node, and by the mobile node Second IP address of the second router where before device is sent to the communication node, and then the communication node is existed After receiving the first session data bag, using second IP address as final source IP address, and by first session Packet and second IP address are delivered to the upper strata of the IP layers of communication node；

First receiver, is additionally operable to receive that the first router sends using second IP address as purpose IP address The second session data bag；Or

It is additionally operable to receive the second session data bag and second IP address that the first router is sent；

First processor, for using second IP address as final purpose IP address, and by first receiver The the second session data bag and second IP address received is delivered to the upper strata of the IP layers of mobile node device.

In terms of the described 6th, in the first implementation of the described 6th aspect, first transmitter, specifically For：

In terms of the described 6th, in second of implementation of the described 6th aspect, first transmitter, specifically For：

Using first IP address as source IP address, using the 3rd IP address as purpose IP address to the first via by Device sends the first session data bag.

With reference to second of implementation, in the third implementation of the described 6th aspect, described first sends Device, it is additionally operable to：

Router request message is sent to the first router, is indicated in the router request message with first Position, first flag bit are the first numerical value, and first numerical value is used to represent that the mobile node device will be with described first IP address is the transmission that source IP address carries out the first session data bag.

7th aspect, the embodiment of the present invention provide a kind of conversational system of distributed mobile management, including the first via by Device, the second router, mobile node device and communication node, wherein,

The first router, for distributing the first IP address for mobile node device, obtain the second IP address and lead to 3rd IP address of letter node, the second router at place is described before second IP address is the mobile node device Mobile node device distribution, the first session data bag that the mobile node device is sent is received, with first IP address The first session data bag is sent to the communication node for source IP address, and second IP address is sent to described lead to Believe node, receive the communication node using the 3rd IP address as source IP address, second using the first IP address as purpose IP address Session data bag, the second session data bag is directly sent to the mobile node using the second IP address as purpose IP address Device, or the second session data bag is sent to the mobile node device, and second IP address is sent to institute State mobile node device；

The mobile node device, for receiving the first IP address of the first router distribution, to the first via First session data bag is sent by device, receive that the first router sends using second IP address as purpose IP address Second session data bag, or the second session data bag and second IP address that the first router is sent are received, Using second IP address as final purpose IP address, and the second session data bag and second IP address are submitted To the upper strata of the IP layers of mobile node device；

The communication node, for receive the first router transmission the first session data bag after, with described Second IP address is final source IP address, and the first session data bag and second IP address are delivered into communication section Point IP layers upper strata, using the 3rd IP address as source IP address, using the first IP address as purpose IP address to the first via by Device sends the second session data bag.

Session method, the apparatus and system of distributed mobile management provided in an embodiment of the present invention, due to the movement Node apparatus is moved to after the network where the first router, and communication node receives the first session data bag and movable joint is decorated When putting the second session data bag of reception, respectively using the second IP address that the second router is the mobile node device distribution as most Whole source IP address and final purpose IP address, so as to the second tunnel where ensure that the mobile node device before it The session initiated by device will not be interrupted, and due to the first router to communication node send the first session data bag when with described the One router is that the first IP address of mobile node device distribution is source IP address, and communication node is sent to the first router Second session data bag is using first IP address as purpose IP address, so that the first router and the communication section Communication tunnel need not be established during point communication.Compared with prior art, the embodiment of the present invention ensure that mobile node device at it In the case that the session that the second router where before is initiated will not be interrupted, application communication tunnel is avoided, so as to save The session cost of distributed mobile management.

Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also To obtain other accompanying drawings according to these accompanying drawings.

Fig. 1 is the flow chart one of the session method of distributed mobile management provided in an embodiment of the present invention；

Fig. 2 is the flowchart 2 of the session method of distributed mobile management provided in an embodiment of the present invention；

Fig. 3 is the flow chart of the session method for the distributed mobile management that further embodiment of this invention provides；

Fig. 4 is the flow chart of the session method for the distributed mobile management that another embodiment of the present invention provides；

Fig. 5 is the structural representation one of the first router provided in an embodiment of the present invention；

Fig. 6 is the structural representation two of the first router provided in an embodiment of the present invention；

Fig. 7 is the structural representation for the first router that further embodiment of this invention provides；

Fig. 8 is the structural representation one of mobile node device provided in an embodiment of the present invention；

Fig. 9 is the structural representation two of mobile node device provided in an embodiment of the present invention；

Figure 10 is the structural representation for the mobile node device that further embodiment of this invention provides；

Figure 11 is the structural representation of the conversational system of distributed mobile management provided in an embodiment of the present invention.

Embodiment

The advantages of to make technical solution of the present invention, is clearer, and the present invention is made specifically with reference to the accompanying drawings and examples It is bright.

As shown in figure 1, the session method of distributed mobile management provided in an embodiment of the present invention, from the first router side It is illustrated, methods described includes：

101st, the first router is that mobile node device distributes the first IP address.

102nd, the first router obtains the second IP address and the 3rd IP address of communication node.

Wherein, the second router where before second IP address is the mobile node device is the movable joint Point device distribution.

Wherein, the first router can obtain the session letter of the mobile node device by a centralized device Breath, the centralized device is used for the session information for recording the mobile node device, such as is stored in the centralized device There is the configuration information (policy profile) of the mobile node device, being recorded in the configuration information has the mobile node The session information of device, the session information include identity tag (the Mobile Node of the mobile node device Identity, abbreviation MN-ID), second IP address and the 3rd IP address.

Or the first router can pass through the session to the second router acquisition mobile node device Information, the session information include identity tag, second IP address and the 3rd IP address of the mobile node device. In addition, in the first router after the second router obtains the mobile node device session information, described the Two routers can delete the session information of the mobile node device, to save the memory space of the second router.

Or the first router obtains session information, such as the mobile node at the mobile node device Device is stored with the configuration information (policy profile) of the mobile node device, is recorded in the configuration information described in having The session information of mobile node device, the session information include identity tag, the 2nd IP of the mobile node device Address and the 3rd IP address.

Or the first router obtain session information at the mobile node device can also be by described in reception The packet of what mobile node device was sent the carry session information realizes that the session information includes the movable joint Second IP address and the 3rd IP address of point device.

103rd, the first router receives the first session data bag that the mobile node device is sent.

Wherein, the mobile node device can carry out the by source IP address of first IP address or the second IP address The transmission of one session packet.If the mobile node device carries out the first session by source IP address of first IP address The transmission of packet, then second IP address can be by the home address option (Home of the first session data bag IP heads Address Option) carry.

104th, the first router sends described the using first IP address as source IP address to the communication node One session packet, and second IP address is sent to the communication node, to cause the communication node receiving After the session data bag, using second IP address as final source IP address, and by the first session data bag and institute State the upper strata that the second IP address is delivered to the IP layers of communication node.

105th, the first router receives the communication node using the 3rd IP address as source IP address, with the first IP address For the second session data bag of purpose IP address.Step 106 or step 107 are performed afterwards.

Wherein, second IP address route head (Type 2 with the type 2 in the IP heads of the second session data bag Routing Header) carry.

106th, the first router directly sends out the second session data bag using the second IP address as purpose IP address The mobile node device is given, to cause the mobile node device after the second session data bag is received, with institute It is final purpose IP address to state the second IP address, and the second session data bag and second IP address are delivered into shifting The upper strata of the IP layers of dynamic node apparatus.

Wherein, the first router is after the second session data bag is received, with the Routing of Type 2 Second IP address in Header substitutes the first IP address in IP heads, to cause second IP address to be used as purpose IP Address.

107th, the first router sends the second session data bag to the mobile node device, and by the 2nd IP Address is sent to the mobile node device, to cause the mobile node device receiving the second session data bag Afterwards, using second IP address as final purpose IP address, and by the second session data bag and second IP address It is delivered to the upper strata of the IP layers of mobile node device.

Wherein, the first router directly forwards the second session data bag, and second IP address is with described The Routing Header of Type 2 in the IP heads of two session data bags are carried.

As shown in Fig. 2 the session method of distributed mobile management provided in an embodiment of the present invention, from mobile node device Side is illustrated, and methods described includes：

201st, mobile node device receives the first IP of the first router distribution after being attached in the first router Address.

202nd, the mobile node device sends the first session data bag to the first router, to cause described first Router using first IP address is source IP address sends the first session data bag to communication node, and by the movement Second IP address of the second router distribution where before node apparatus is sent to the communication node, and then causes described logical Node is believed after the first session data bag is received, using second IP address as final source IP address, and by described in First session data bag and second IP address are delivered to the upper strata of the IP layers of communication node.Afterwards perform step 203 or Step 204.

203rd, the mobile node device receive that the first router sends using second IP address as purpose IP Second session data bag of address.

204th, the mobile node device receives the second session data bag that the first router sends and described the Two IP address.

205th, the mobile node device is after the second session data bag is received, using second IP address as most Whole purpose IP address, and the second session data bag and second IP address are delivered to the IP layers of mobile node device Upper strata.

What deserves to be explained is the first router provided in an embodiment of the present invention and the second router are typically the first jumper connection Enter router (First-hop Access Router, abbreviation AR), it can be used as mobile anchor point, perform mobile management function to ps domain.

The session method of distributed mobile management provided in an embodiment of the present invention, because communication node receives the first session When packet and mobile node device receive the second session data bag, respectively using the second router as the mobile node device point The second IP address matched somebody with somebody is final source IP address and final purpose IP address, so as to ensure that the mobile node device exists Its it is previous where the second router initiate session will not interrupt, and due to the first router to communication node send the first meeting Using the first IP address that the first router is mobile node device distribution as source IP address when talking about packet, and communication node The the second session data bag sent to the first router is using first IP address as purpose IP address, so that described first Router need not establish communication tunnel when being communicated with the communication node.Compared with prior art, the embodiment of the present invention is ensureing Mobile node device before it where the session initiated of the second router will not interrupt in the case of, avoid using logical Tunnel is believed, so as to save the session cost of distributed mobile management.

As shown in figure 3, the session method for the distributed mobile management that further embodiment of this invention provides, including：

301st, mobile node (Mobile Node, abbreviation MN) device initiates session in the second router, with described second Router is that the second IP address of its distribution is that source IP address sends the first session data bag to communication node.

302nd, the mobile node device is moved in the network of the first router, and is being attached in mobile node device After on one router, the first router is that mobile node device distributes the first IP address.

303rd, the mobile node device sends router request message to the first router.

Wherein, the first flag bit is carried in router solicitation (Router Solicitation, the abbreviation RS) message, If first flag bit is the first numerical value (for example with binary number 1), first numerical value is used to represent the movement Node apparatus will carry out the transmission of the first session data bag using first IP address as source IP address.If first mark Position be second value (for example with Binary Zero), and the second value is for representing that the mobile node device will be with described the Two IP address are the transmission that source IP address carries out the first session data bag.

304th, the first router obtains the second IP address and the 3rd IP address of communication node.

305th, the first router passes through agent binding update (Proxy Binding Update, abbreviation PBU) message Binding relationship is established with the communication node, in the agent binding update messages with carrying first flag bit, the first IP Location and the second IP address.

Wherein, the first flag bit in the PBU message is the first numerical value (for example with binary number 1), described in instruction Mobile node device will carry out the transmission of the first session data bag using first IP address as source IP address, to maintain second The session initiated on router it is continuous.First IP address can be recorded in one in mobile node device it is pre-defined Current address mobile option (MN Current-Address Mobility Option) in, such as MN Current- Address Mobility Option form is as shown in table 1, wherein Type represent option type (value be integer, such as Be defined as 7), Length represent MN Current-Address length (value 16, unit are sub- section), MN Current- Address represents that the value of option is the value of current address mobile option, and second IP address can be recorded in the PBU and disappear In home address option (Home Address Option) in the IP heads of breath.

The form of table 1.MN Current-Address Mobility Option options：

306th, the communication node disclosure satisfy that the shifting after the agent binding update messages are received at its own Dynamic node apparatus using the requirement for the transmission that first IP address is source IP address the first session data bag of progress when, to described The first router returns to agent binding response (the Proxy Binding relative to the agent binding update messages Acknowledgement, abbreviation PBA) message.

Wherein, first flag bit is carried in the PBA message, the first flag bit in the PBA message is first Numerical value (for example with binary number 1), for representing that the communication node agrees to the mobile node device with the first IP Address is the transmission that source IP address carries out the first session data bag.

Wherein, the communication node receive the agent binding update messages and agree to the mobile node device with When first IP address is the transmission that source IP address carries out the first session data bag, the communication node must maintain one to tie up Determine list, the list of bindings comprises at least identity tag (Mobile Node Identity, the letter of the mobile node device Claim MN-ID), first flag bit, home address (Home Address, abbreviation HoA), current address.Wherein, the binding First flag bit in list is the first numerical value (for example with binary number 1), and the home address is the movable joint The second router where before point device is the second IP address of mobile node device distribution, and the current address is institute State the first IP address that the first router that mobile node device is currently located is mobile node device distribution.

Specifically, the communication node can judge its own whether disclosure satisfy that the mobile node device with described One IP address is the requirement for the transmission that source IP address carries out the first session data bag, wherein, if the communication node and the shifting The security imperfection of dynamic node apparatus, then the communication node do not receive the mobile node device with the first IP Location is the requirement for the transmission that source IP address carries out the first session data bag, now in order to ensure the mobile node device described The security for the session initiated in the second router, then take in the network where the second router and the first router institute Network between establish communication tunnel, or established between the network where the communication node and the first router Communication tunnel is completed, but is not only limited to this.

307th, the first router receives the agent binding response message that the communication node is sent, and informs the movement Node apparatus sends the first session data bag by source IP address of first IP address.

Wherein, the first router can send router advertisement (Router to the mobile node device Advertisement, abbreviation RA) message, inform that the mobile node device is sent by source IP address of first IP address The first session data bag.The first flag bit is carried in the router advertisement message, first flag bit is the first number (for example with binary number 1), first numerical value is used to represent that the mobile node device will be with first IP address value The transmission of the first session data bag is carried out for source IP address.

If first flag bit described in step 303 in router request message for second value (for example with Binary number 0), then described first in router advertisement (Router Advertisement, the abbreviation RA) message indicates Position is second value (for example with binary number 0), and the first router must maintain a list of bindings, described to tie up Determine identity tag (Mobile Node Identity, abbreviation MN-ID), first mark of the list including at least mobile node device Position, home address (Home Address, abbreviation HoA), former address.

First flag bit in the list of bindings is second value (for example with binary number 0), the local Address is the first IP address that the first router that the mobile node device is currently located is the mobile node device distribution, Address is that the second router where before the mobile node device is the mobile node device distribution before described the Two IP address.

308th, the mobile node device is using first IP address as source IP address, for the purpose of the 3rd IP address IP address sends the first session data bag to the first router.

Wherein, the second router where the first session data bag can carry the mobile node device before is institute The second IP address of mobile node device distribution is stated, second IP address can be by the family of the first session data bag IP heads Township's address option (Home Address Option) carries.

309th, the first router sends the first meeting using first IP address as source IP address to the communication node Packet is talked about, and second IP address is sent to the communication node.

310th, the communication node is after the first session data bag is received, using second IP address to be final Source IP address, and the first session data bag and second IP address are delivered to the upper strata of the IP layers of communication node.

311st, the communication node is using the 3rd IP address as source IP address, is purpose IP address to described using the first IP address The first router sends the second session data bag.

Wherein, now second IP address route head (Type 2 by the type 2 of the IP heads of the second session data bag Routing Header) carry.

312nd, the first router is after the second session data bag is received, using the first IP address as purpose IP Location sends the second session data bag to the mobile node device, and second IP address is sent into the movable joint and decorated Put.

313rd, the mobile node device is after the second session data bag is received, using second IP address as most Whole purpose IP address, and the second session data bag and second IP address are delivered to the IP layers of mobile node device Upper strata.

The session method for the distributed mobile management that further embodiment of this invention provides, because communication node receives first When session data bag and mobile node device receive the second session data bag, decorated respectively by the movable joint of the second router The second IP address for putting distribution is final source IP address and final purpose IP address, so as to ensure that the movable joint is decorated The session that the second router where putting before it is initiated will not be interrupted, and because the first router to communication node sends the Using the first IP address that the first router is mobile node device distribution as source IP address during one session packet, and communicate The second session data bag that node is sent to the first router is using first IP address as purpose IP address, so that described The first router need not establish communication tunnel when being communicated with the communication node.Compared with prior art, the embodiment of the present invention exists In the case that the session that the second router where ensure that mobile node device before it is initiated will not be interrupted, avoiding should With communication tunnel, so as to save the session cost of distributed mobile management.

As shown in figure 4, the session method for the distributed mobile management that another embodiment of the present invention provides, including：

401st, mobile node (Mobile Node, abbreviation MN) device initiates session in the second router, with described second Router is that the second IP address of its distribution is that source IP address sends the first session data bag to communication node.

402nd, the mobile node device is moved in the network of the first router, and is being attached in mobile node device After on one router, the first router is that mobile node device distributes the first IP address.

403rd, the mobile node device is using second IP address as source IP address, for the purpose of the 3rd IP address IP address sends the first session data bag to the first router.

404th, the first router replaces institute after the first session data bag is received with first IP address State the second IP address at the source IP address field in the first session data bag.

405th, the first router sends the first meeting using first IP address as source IP address to the communication node Packet is talked about, and second IP address is sent to the communication node.

Wherein, second IP address is by the home address option (Home in the IP heads of the first session data bag Address Option) carry.

406th, the communication node is after the first session data bag is received, using second IP address to be final Source IP address, and the first session data bag and second IP address are delivered to the upper strata of the IP layers of communication node.

407th, the communication node is using the 3rd IP address as source IP address, is purpose IP address to described using the first IP address The first router sends the second session data bag.

Wherein, the second router where the second session data bag can carry the mobile node device before is institute The second IP address of mobile node device distribution is stated, second IP address is by the class in the IP heads of the second session data bag Type 2 route head (the Routing Header of Type 2) and carried.

408th, the first router replaces institute after the second session data bag is received with second IP address State the first IP address at the source IP address field in the second session data bag.

409th, the first router directly sends out the second session data bag using the second IP address as purpose IP address Give the mobile node device.

410th, the mobile node device is after the second session data bag is received, using second IP address as most Whole purpose IP address, and the second session data bag and second IP address are delivered to the IP layers of mobile node device Upper strata.

The session method for the distributed mobile management that another embodiment of the present invention provides, because communication node receives first When session data bag and mobile node device receive the second session data bag, decorated respectively by the movable joint of the second router The second IP address for putting distribution is final source IP address and final purpose IP address, so as to ensure that the movable joint is decorated The session that the second router where putting before it is initiated will not be interrupted, and because the first router to communication node sends the Using the first IP address that the first router is mobile node device distribution as source IP address during one session packet, and communicate The second session data bag that node is sent to the first router is using first IP address as purpose IP address, so that described The first router need not establish communication tunnel when being communicated with the communication node.Compared with prior art, the embodiment of the present invention exists In the case that the session that the second router where ensure that mobile node device before it is initiated will not be interrupted, avoiding should With communication tunnel, so as to save the session cost of distributed mobile management.

As shown in figure 5, the first router provided in an embodiment of the present invention, including：

First allocation unit 501, for distributing the first IP address for mobile node device.Its specific implementation is referring to figure In 1 shown in step 101, here is omitted.

First acquisition unit 502, for obtaining the 3rd IP address of the second IP address and communication node, wherein described the The second router at place is what the mobile node device distributed before two IP address are the mobile node device.Its is specific Implementation is referring to shown in step 102 in Fig. 1, and here is omitted.

First receiving unit 503, the first session data bag sent for receiving the mobile node device.It is specific real Existing mode is referring to shown in step 103 in Fig. 1, and here is omitted.

First transmitting element 504, for using the first IP address that first allocation unit 501 is distributed as source IP address to The communication node sends the first session data bag that first receiving unit 503 receives, and obtains list by described first The second IP address that member 502 obtains is sent to the communication node, to cause the communication node receiving first meeting After talking about packet, using second IP address as final source IP address, and by the first session data bag and described second IP address is delivered to the upper strata of the IP layers of communication node.Its specific implementation is referring to shown in step 104 in Fig. 1, herein no longer Repeat.

Second receiving unit 505, for receiving the communication node using the 3rd IP address as source IP address, with the first IP Location is the second session data bag of purpose IP address.Its specific implementation is no longer gone to live in the household of one's in-laws on getting married herein referring to shown in step 105 in Fig. 1 State.

First transmitting element 504, be additionally operable to directly using the first acquisition unit 502 obtain the second IP address as The second session data bag that purpose IP address receives second receiving unit 505 is sent to the mobile node device, To cause the mobile node device after the second session data bag is received, using second IP address as final mesh IP address, and the second session data bag and second IP address are delivered to the upper of the IP layers of mobile node device Layer.Its specific implementation is referring to shown in step 106 in Fig. 1, and here is omitted.

Or first transmitting element 504, it is additionally operable to the first router and sends institute to the mobile node device State the second session data bag that the second receiving unit 505 receives, and the 2nd IP that the first acquisition unit 502 is obtained Location is sent to the mobile node device, to cause the mobile node device after the second session data bag is received, Using second IP address as final purpose IP address, and the second session data bag and second IP address are submitted To the upper strata of the IP layers of mobile node device.Its specific implementation is referring to shown in step 107 in Fig. 1, and here is omitted.

Further, as shown in fig. 6, first receiving unit 503, is specifically used for：

The mobile node device is received using second IP address as source IP address, for the purpose of the 3rd IP address First session data bag of IP address.Its specific implementation is referring to shown in step 403 in Fig. 4, and here is omitted.

Further, as shown in fig. 6, the first router, in addition to：

First replacement unit 506, the first IP address for being distributed with first allocation unit 501 replace described first The second IP address at source IP address field in the first session data bag that receiving unit 503 receives.Its specific implementation side Formula is referring to shown in step 404 in Fig. 4, and here is omitted.

The mobile node device is received using first IP address as source IP address, for the purpose of the 3rd IP address First session data bag of IP address.Its specific implementation is referring to shown in step 308 in Fig. 3, and here is omitted.

Further, as shown in fig. 6, the first router, in addition to：

3rd receiving unit 507, the router request message sent for receiving the mobile node device, the route The first flag bit is carried in device request message, first flag bit is the first numerical value, and first numerical value is used to represent described Mobile node device will carry out the transmission of the first session data bag using first IP address as source IP address.It is specific real Existing mode is referring to shown in step 303 in Fig. 3, and here is omitted.

First binding unit 508, for after the 3rd receiving unit 507 receives router request message, passing through Agent binding update messages establish binding relationship with the communication node, and described first is carried in the agent binding update messages Flag bit, the first IP address and the second IP address.Its specific implementation is no longer gone to live in the household of one's in-laws on getting married herein referring to shown in step 305 in Fig. 3 State.

4th receiving unit 509, for receiving being sent out relative to first binding unit 508 for the communication node transmission The agent binding response message of the agent binding update messages sent, the agent binding response message are used to represent the communication section Point agrees to that the mobile node device carries out the transmission of the first session data bag using first IP address as source IP address. Its specific implementation is referring to shown in step 306 in Fig. 3, and here is omitted.

Further, as shown in fig. 6, the first acquisition unit 502：

Session information specifically for obtaining the mobile node device by a centralized device, the centralized device For recording the session information of the mobile node device, the session information includes the identity mark of the mobile node device Will, second IP address and the 3rd IP address.Its specific implementation is no longer gone to live in the household of one's in-laws on getting married herein referring to shown in step 304 in Fig. 3 State.

Or the as shown in fig. 6, first acquisition unit 502：

Session information specifically for obtaining from the mobile node device to the second router, the session information bag Include identity tag, second IP address and the 3rd IP address of the mobile node device.Its specific implementation referring to In Fig. 3 shown in step 304, here is omitted.

Or the as shown in fig. 6, first acquisition unit 502：

Specifically for obtaining session information at the mobile node device, the session information includes the mobile node The identity tag of device, second IP address and the 3rd IP address.Its specific implementation is referring to step 304 institute in Fig. 3 Show, here is omitted.

The first router provided in an embodiment of the present invention, due to the communication node receive the first session data bag and Mobile node device is distributed using the second router as the mobile node device respectively when receiving the second session data bag Second IP address is final source IP address and final purpose IP address, so as to ensure that the mobile node device its it The session that the second router at preceding place is initiated will not be interrupted, and because the first router to communication node sends the first session number According to, using the first IP address that the first router is mobile node device distribution as source IP address, and communication node is to the during bag One router send the second session data bag using first IP address as purpose IP address so that the first via by Device need not establish communication tunnel when being communicated with the communication node.Compared with prior art, the embodiment of the present invention ensure that shifting Dynamic node apparatus before it where the second router initiate session will not interrupt in the case of, avoid application communication tunnel Road, so as to save the session cost of distributed mobile management.

As shown in fig. 7, the first router that further embodiment of this invention provides, including：

First processor 61, for distributing the first IP address for mobile node device.Its specific implementation is referring in Fig. 1 Shown in step 101, here is omitted.

First receiver 62, for obtaining the 3rd IP address of the second IP address and communication node, wherein described second The second router at place is what the mobile node device distributed before IP address is the mobile node device.It is specific real Existing mode is referring to shown in step 102 in Fig. 1, and here is omitted.

First receiver 62, it is additionally operable to receive the first session data bag that the mobile node device is sent.It has Body implementation is referring to shown in step 103 in Fig. 1, and here is omitted.

First transmitter 63, for leading to using the first IP address that the first processor 61 distributes as source IP address to described Believe that node sends the first session data bag, and second IP address is sent to the communication node, to cause the communication Node is after the first session data bag is received, using second IP address as final source IP address, and by described One session packet and second IP address are delivered to the upper strata of the IP layers of communication node.Its specific implementation is referring to Fig. 1 Shown in middle step 104, here is omitted.

First receiver 62, it is additionally operable to receive the communication node using the 3rd IP address as source IP address, with first IP address is the second session data bag of purpose IP address.Its specific implementation is referring to shown in step 105 in Fig. 1, herein not Repeat again.

First transmitter 63, it is purpose IP address by first receiver 62 to be additionally operable to directly using the second IP address The the second session data bag received is sent to the mobile node device, with cause the mobile node device receive it is described After second session data bag, using second IP address as final purpose IP address, and by the second session data bag and Second IP address is delivered to the upper strata of the IP layers of mobile node device.Its specific implementation is referring to step 106 institute in Fig. 1 Show, here is omitted.

Or first transmitter 63, it is additionally operable to the first router and sends first to the mobile node device The second session data bag that receiver 62 receives, and second IP address is sent to the mobile node device, to cause The mobile node device is after the second session data bag is received, using second IP address as final purpose IP Location, and the second session data bag and second IP address are delivered to the upper strata of the IP layers of mobile node device.It has Body implementation is referring to shown in step 107 in Fig. 1, and here is omitted.

Further, as shown in fig. 7, first receiver 62, is specifically used for：

Further, as shown in fig. 7, the first processor 61,

It is additionally operable to replace second at the source IP address field in the first session data bag with first IP address IP address.Its specific implementation is referring to shown in step 404 in Fig. 4, and here is omitted.

Further, as shown in fig. 7, first receiver 62, is specifically used for：

Further, as shown in fig. 7, first receiver 62,

It is additionally operable to receive the router request message that the mobile node device is sent, band in the router request message There is the first flag bit, first flag bit is the first numerical value, and first numerical value is used to represent that the mobile node device will The transmission of the first session data bag is carried out using first IP address as source IP address.Its specific implementation is referring to Fig. 3 Shown in middle step 303, here is omitted.

First transmitter 63, it is additionally operable to establish binding pass by agent binding update messages and the communication node It is to carry first flag bit, the first IP address and the second IP address in the agent binding update messages.It is implemented Mode is referring to shown in step 305 in Fig. 3, and here is omitted.

First receiver 62, it is additionally operable to receive relative to the agent binding update disappearing for the communication node transmission The agent binding response message of breath, the agent binding response message are used to represent that the communication node agrees to the mobile node Device conversates the transmission of packet using first IP address as source IP address.Its specific implementation in Fig. 3 referring to walking Shown in rapid 306, here is omitted.

Further, as shown in fig. 7, first receiver 62,

It is additionally operable to obtain the session information of the mobile node device by a centralized device, the centralized device is used In the session information for recording the mobile node device, the session information include the mobile node device identity tag, Second IP address and the 3rd IP address.Its specific implementation is referring to shown in step 304 in Fig. 3, and here is omitted.

Further, as shown in fig. 7, first receiver 62,

It is additionally operable to obtain the session information of the mobile node device to the second router, the session information includes The identity tag of the mobile node device, second IP address and the 3rd IP address.Its specific implementation is referring to Fig. 3 Shown in middle step 304, here is omitted.

Further, as shown in fig. 7, first receiver 62,

It is additionally operable to obtain session information at the mobile node device, the session information is decorated including the movable joint Identity tag, second IP address and the 3rd IP address put.Its specific implementation referring to shown in step 304 in Fig. 3, Here is omitted.

The first router that further embodiment of this invention provides, because the communication node is receiving the first session data Bag and mobile node device are when receiving the second session data bag, respectively using the second router as the mobile node device point The second IP address matched somebody with somebody is final source IP address and final purpose IP address, so as to ensure that the mobile node device exists Its it is previous where the second router initiate session will not interrupt, and due to the first router to communication node send the first meeting Using the first IP address that the first router is mobile node device distribution as source IP address when talking about packet, and communication node The the second session data bag sent to the first router is using first IP address as purpose IP address, so that described first Router need not establish communication tunnel when being communicated with the communication node.Compared with prior art, the embodiment of the present invention is ensureing Mobile node device before it where the session initiated of the second router will not interrupt in the case of, avoid using logical Tunnel is believed, so as to save the session cost of distributed mobile management.

As shown in figure 8, mobile node device provided in an embodiment of the present invention, including：

First receiving unit 71, for after being attached in the first router, receiving the of the first router distribution One IP address.Its specific implementation is referring to shown in step 201 in Fig. 2, and here is omitted.

First transmitting element 72, for sending the first session data bag to the first router, to cause described first Router using first IP address is source IP address sends the first session data bag to communication node, and by the movement Second IP address of the second router where before node apparatus is sent to the communication node, and then causes the communication section Point is after the first session data bag is received, using second IP address as final source IP address, and by described first Session data bag and second IP address are delivered to the upper strata of the IP layers of communication node.Its specific implementation is referring in Fig. 2 Shown in step 202, here is omitted.

Second receiving unit 73, for receiving that the first router sends using second IP address as purpose IP The second session data bag of location, or for receive the second session data bag that the first router sends and Second IP address.Its specific implementation is referring to shown in step 203 in Fig. 2 and step 204, and here is omitted.

Unit 74 is submitted, for using second IP address as final purpose IP address, and described second is received single The second session data bag and second IP address that member 73 receives are delivered to the upper strata of the IP layers of mobile node device.Its Specific implementation is referring to shown in step 205 in Fig. 2, and here is omitted.

Further, as shown in figure 9, first transmitting element 72, is specifically used for：

Using second IP address as source IP address, using the 3rd IP address as purpose IP address to the first via by Device sends the first session data bag.Its specific implementation is referring to shown in step 403 in Fig. 4, and here is omitted.

Using first IP address as source IP address, using the 3rd IP address as purpose IP address to the first via by Device sends the first session data bag.Its specific implementation is referring to shown in step 308 in Fig. 3, and here is omitted.

Further, as shown in figure 9, the mobile node device, in addition to：

Second transmitting element 75, for sending router request message, the router solicitation to the first router The first flag bit is carried in message, first flag bit is the first numerical value, and first numerical value is used to represent the movable joint Point device will carry out the transmission of the first session data bag using first IP address as source IP address.Its specific implementation Referring to shown in step 303 in Fig. 3, here is omitted.

What deserves to be explained is mobile node device provided in an embodiment of the present invention can be mobile phone, removable telephone set etc., But it is not only limited to this.

Mobile node device provided in an embodiment of the present invention, because communication node receives the first session data bag and movable joint When point device receives the second session data bag, the second IP address for being distributed respectively using the second router as the mobile node device For final source IP address and final purpose IP address, so as to the where ensure that the mobile node device before it Two routers initiate session will not interrupt, and by the first router to communication node send the first session data bag when with institute It is source IP address to state the first IP address that the first router is mobile node device distribution, and communication node is sent out to the first router The the second session data bag sent is using first IP address as purpose IP address, so that the first router is led to described Communication tunnel need not be established during letter node communication.Compared with prior art, the embodiment of the present invention ensure that mobile node device In the case that the session that the second router where before it is initiated will not be interrupted, application communication tunnel is avoided, so as to save The session cost of distributed mobile management is saved.

As shown in Figure 10, the mobile node device that further embodiment of this invention provides, including：

First receiver 81, for after being attached in the first router, receiving the first of the first router distribution IP address.Its specific implementation is referring to shown in step 201 in Fig. 2, and here is omitted.

First transmitter 82, for sending the first session data bag to the first router, to cause the first via From device using first IP address be source IP address sends the first session data bag to communication node, and by the movable joint Second IP address of the second router where before point device is sent to the communication node, and then causes the communication node After the first session data bag is received, using second IP address as final source IP address, and by first meeting Words packet and second IP address are delivered to the upper strata of the IP layers of communication node.Its specific implementation in Fig. 2 referring to walking Shown in rapid 202, here is omitted.

First receiver 81, be additionally operable to receive the first router sends using second IP address as purpose IP The second session data bag of location, or for receive the second session data bag that the first router sends and Second IP address.Its specific implementation is referring to shown in step 203 in Fig. 2 and step 204, and here is omitted.

First processor 83, for using second IP address as final purpose IP address, and described first is received The second session data bag and second IP address that device 81 receives are delivered to the upper strata of the IP layers of mobile node device.Its is specific Implementation is referring to shown in step 205 in Fig. 2, and here is omitted.

Further, as shown in Figure 10, first transmitter 82, is specifically used for：

Further, as shown in Figure 10, first transmitter 82, is additionally operable to：

Router request message is sent to the first router, is indicated in the router request message with first Position, first flag bit are the first numerical value, and first numerical value is used to represent that the mobile node device will be with described first IP address is the transmission that source IP address carries out the first session data bag.Its specific implementation is referring to step 303 institute in Fig. 3 Show, here is omitted.

The mobile node device that further embodiment of this invention provides, because communication node receives the first session data bag and shifting When dynamic node apparatus receives the second session data bag, the 2nd IP that is distributed respectively using the second router as the mobile node device Address is final source IP address and final purpose IP address, so as to it ensure that the mobile node device before it where The second router initiate session will not interrupt, and due to the first router to communication node send the first session data bag when Using the first router be mobile node device distribution the first IP address as source IP address, and communication node to the first via by The second session data bag that device is sent is using first IP address as purpose IP address, so that the first router and institute Communication tunnel need not be established when stating communication node communication.Compared with prior art, the embodiment of the present invention ensure that mobile node Device before it where the second router initiate session will not interrupt in the case of, avoid application communication tunnel, from And save the session cost of distributed mobile management.

As shown in figure 11, the conversational system of distributed mobile management provided in an embodiment of the present invention, including above-mentioned One router 91, the second router 92, mobile node device 93 and communication node 94, wherein,

The first router 91, for for mobile node device 93 distribute the first IP address, obtain the second IP address with And the 3rd IP address of communication node 94, the second router 92 at place before second IP address is mobile node device 93 For the mobile node device 93 distribution, the first session data bag that the mobile node device 93 is sent is received, with described First IP address is that source IP address sends the first session data bag to the communication node 94, and by second IP address Be sent to the communication node 94, receive the communication node 94 using the 3rd IP address as source IP address, using the first IP address as Second session data bag of purpose IP address, directly the second session data bag is sent out using the second IP address as purpose IP address Give the mobile node device 93, or the second session data bag is sent to the mobile node device 93, and by institute State the second IP address and be sent to the mobile node device 93.

The mobile node device 93, the first IP address distributed for receiving the first router 91, to described the One router 91 sends the first session data bag, receive that the first router 91 sends for the purpose of second IP address The second session data bag of IP address, or receive the second session data bag and institute that the first router 91 is sent The second IP address is stated, using second IP address as final purpose IP address, and by the second session data bag and described Second IP address is delivered to the upper strata of the IP layers of mobile node device 93.

The communication node 94, for receive the first router 91 transmission the first session data bag after, with Second IP address is final source IP address, and the first session data bag and second IP address is delivered to logical Believe the upper strata of the IP layers of node 94, be purpose IP address to described the using the first IP address using the 3rd IP address as source IP address One router 91 sends the second session data bag.

Its specific implementation referring to above-mentioned the first router and mobile node device specific embodiment, herein no longer Repeat.

The conversational system of distributed mobile management provided in an embodiment of the present invention, because communication node receives the first session When packet and mobile node device receive the second session data bag, respectively using the second router as the mobile node device point The second IP address matched somebody with somebody is final source IP address and final purpose IP address, so as to ensure that the mobile node device exists Its it is previous where the second router initiate session will not interrupt, and due to the first router to communication node send the first meeting Using the first IP address that the first router is mobile node device distribution as source IP address when talking about packet, and communication node The the second session data bag sent to the first router is using first IP address as purpose IP address, so that described first Router need not establish communication tunnel when being communicated with the communication node.Compared with prior art, the embodiment of the present invention is ensureing Mobile node device before it where the session initiated of the second router will not interrupt in the case of, avoid using logical Tunnel is believed, so as to save the session cost of distributed mobile management.

Through the above description of the embodiments, it is apparent to those skilled in the art that the present invention can borrow Software is helped to add the mode of required common hardware to realize, naturally it is also possible to which by hardware, but the former is more preferably in many cases Embodiment.Based on such understanding, portion that technical scheme substantially contributes to prior art in other words Dividing can be embodied in the form of software product, and the computer software product is stored in the storage medium that can be read, and such as be counted The floppy disk of calculation machine, hard disk or CD etc., including some instructions to cause a computer equipment (can be personal computer, Server, or network equipment etc.) perform method described in each embodiment of the present invention.

The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.

Claims

A kind of 1. session method of distributed mobile management, it is characterised in that including：

The first router is that mobile node device distributes the first IP address；

The first router obtains the second IP address and the 3rd IP address of communication node, wherein second IP address is The second router where before the mobile node device is mobile node device distribution；

The first router receives the first session data bag that the mobile node device is sent；

The first router sends first session number using first IP address as source IP address to the communication node The communication node is sent to according to bag, and by second IP address, to cause the communication node receiving described first After session data bag, using second IP address as final source IP address, and by the first session data bag and described Two IP address are delivered to the upper strata of the IP layers of communication node；

The first router receives the communication node using the 3rd IP address as source IP address, using the first IP address as purpose IP Second session data bag of address；

The second session data bag is directly sent to described by the first router using the second IP address as purpose IP address Mobile node device, to cause the mobile node device after the second session data bag is received, with the 2nd IP Address is final purpose IP address, and the second session data bag and second IP address are delivered to movable joint and decorated The upper strata for the IP layers put；Or

The first router sends the second session data bag to the mobile node device, and second IP address is sent To the mobile node device, to cause the mobile node device after the second session data bag is received, with described Second IP address is final purpose IP address, and the second session data bag and second IP address are delivered into movement The upper strata of the IP layers of node apparatus.
2. according to the method for claim 1, it is characterised in that the first router receives the mobile node device hair The the first session data bag sent, including：

The first router receives the mobile node device using second IP address as source IP address, with the 3rd IP Address is the first session data bag of purpose IP address.
3. according to the method for claim 2, it is characterised in that in the first router using first IP address as source Before IP address sends the first session data bag to the communication node, including：

The first router is replaced with first IP address at the source IP address field in the first session data bag Second IP address.
4. according to the method for claim 1, it is characterised in that the first router receives the mobile node device hair The the first session data bag sent, including：

The first router receives the mobile node device using first IP address as source IP address, with the 3rd IP Address is the first session data bag of purpose IP address.
5. according to the method for claim 4, it is characterised in that receive the mobile node device in the first router Using first IP address as source IP address, using the 3rd IP address as the first session data bag of purpose IP address before, Including：

The first router receives the router request message that the mobile node device is sent, the router request message In carry the first flag bit, first flag bit is the first numerical value, and first numerical value is used to represent that the movable joint is decorated The transmission of the first session data bag will be carried out using first IP address as source IP address by putting；

The first router establishes binding relationship, the agent binding by agent binding update messages and the communication node First flag bit, the first IP address and the second IP address are carried in new information；

The first router receives the agent binding relative to the agent binding update messages that the communication node is sent Response message, the agent binding response message are used to representing that the communication node to agree to the mobile node device with described the One IP address is the transmission that source IP address carries out the first session data bag.
6. according to the method described in claim any one of 1-5, it is characterised in that the first router obtains the second IP address And the 3rd IP address of communication node, including：

The first router obtains the session information of the mobile node device, the centralization dress by a centralized device The session information for recording the mobile node device is put, the session information includes the identity mark of the mobile node device Will, second IP address and the 3rd IP address.
7. according to the method described in claim any one of 1-5, it is characterised in that the first router obtains the second IP address And the 3rd IP address of communication node, including：

The first router obtains the session information of the mobile node device, the session information to the second router Identity tag including the mobile node device, second IP address and the 3rd IP address.
8. according to the method described in claim any one of 1-5, it is characterised in that the first router obtains the second IP address And the 3rd IP address of communication node, including：

The first router obtains session information at the mobile node device, and the session information includes the movable joint Identity tag, second IP address and the 3rd IP address of point device.
A kind of 9. session method of distributed mobile management, it is characterised in that including：

Mobile node device receives the first IP address of the first router distribution after being attached in the first router；

The mobile node device to the first router send the first session data bag, with cause the first router with First IP address is source IP address sends the first session data bag to communication node, and by the mobile node device Second IP address of the second router where before is sent to the communication node, and then the communication node is being received To after the first session data bag, using second IP address as final source IP address, and by first session data Bag and second IP address are delivered to the upper strata of the IP layers of communication node；

The using second IP address as purpose IP address that the mobile node device receives that the first router sends Two session data bags；Or

The mobile node device receives the second session data bag and second IP address that the first router is sent；

The mobile node device is after the second session data bag is received, using second IP address as final purpose IP address, and the second session data bag and second IP address are delivered to the upper strata of the IP layers of mobile node device.
10. according to the method for claim 9, it is characterised in that the mobile node device is sent out to the first router The first session data bag is sent, including：

The mobile node device is purpose IP address to described using the 3rd IP address using second IP address as source IP address The first router sends the first session data bag, and the 3rd IP address is used for the IP address for representing the communication node.
11. according to the method for claim 9, it is characterised in that the mobile node device is sent out to the first router The first session data bag is sent, including：

The mobile node device is purpose IP address to described using the 3rd IP address using first IP address as source IP address The first router sends the first session data bag, and the 3rd IP address is used for the IP address for representing the communication node.
12. according to the method for claim 11, it is characterised in that in the mobile node device with first IP address For source IP address, the first session data bag is sent to the first router using the 3rd IP address as purpose IP address Before, including：

The mobile node device sends router request message to the first router, band in the router request message There is the first flag bit, first flag bit is the first numerical value, and first numerical value is used to represent that the mobile node device will The transmission of the first session data bag is carried out using first IP address as source IP address.
A kind of 13. the first router, it is characterised in that including：

First allocation unit, for distributing the first IP address for mobile node device；

First acquisition unit, for obtaining the 3rd IP address of the second IP address and communication node, wherein second IP The second router at place is what the mobile node device distributed before location is the mobile node device；

First receiving unit, the first session data bag sent for receiving the mobile node device；

First transmitting element, for being source IP address to the communication section using the first IP address that first allocation unit is distributed Point sends the first session data bag that first receiving unit receives, and the 2nd IP that the first acquisition unit is obtained Address is sent to the communication node, to cause the communication node after the first session data bag is received, with described Second IP address is final source IP address, and the first session data bag and second IP address are delivered into communication section The upper strata of the IP layers of point；

Second receiving unit, for receiving the communication node using the 3rd IP address as source IP address, using the first IP address as mesh IP address the second session data bag；

First transmitting element, the second IP address for being additionally operable to directly obtain using the first acquisition unit is purpose IP address The second session data bag that second receiving unit is received is sent to the mobile node device, to cause the movement Node apparatus is after the second session data bag is received, using second IP address as final purpose IP address, and will The second session data bag and second IP address are delivered to the upper strata of the IP layers of mobile node device；Or

First transmitting element, it is additionally operable to described send what second receiving unit received to the mobile node device Second session data bag, and the second IP address that the first acquisition unit is obtained is sent to the mobile node device, with So that the mobile node device is after the second session data bag is received, using second IP address as final purpose IP address, and the second session data bag and second IP address are delivered to the upper strata of the IP layers of mobile node device.
14. the first router according to claim 13, it is characterised in that first receiving unit, be specifically used for：

The mobile node device is received using second IP address as source IP address, using the 3rd IP address as purpose IP First session data bag of location.
15. the first router according to claim 14, it is characterised in that also include：

First replacement unit, the first IP address for being distributed with first allocation unit are replaced first receiving unit and connect The second IP address at source IP address field in the first session data bag received.
16. the first router according to claim 13, it is characterised in that first receiving unit, be specifically used for：

The mobile node device is received using first IP address as source IP address, using the 3rd IP address as purpose IP First session data bag of location.
17. the first router according to claim 16, it is characterised in that also include：

3rd receiving unit, the router request message sent for receiving the mobile node device, the router solicitation The first flag bit is carried in message, first flag bit is the first numerical value, and first numerical value is used to represent the movable joint Point device will carry out the transmission of the first session data bag using first IP address as source IP address；

First binding unit, for after the 3rd receiving unit receives router request message, by agent binding more New information and the communication node establish binding relationship, with first flag bit, the in the agent binding update messages One IP address and the second IP address；

4th receiving unit, tied up for receiving the agency sent relative to first binding unit that the communication node is sent Determine the agent binding response message of new information, the agent binding response message is used to represent described in the communication node agreement Mobile node device carries out the transmission of the first session data bag using first IP address as source IP address.
18. according to the first router described in claim any one of 13-17, it is characterised in that the first acquisition unit：

Session information specifically for obtaining the mobile node device by a centralized device, the centralized device are used for The session information of the mobile node device is recorded, the session information includes the identity tag of the mobile node device, institute State the second IP address and the 3rd IP address.
19. according to the first router described in claim any one of 13-17, it is characterised in that the first acquisition unit：

Session information specifically for obtaining from the mobile node device to the second router, the session information include institute State identity tag, second IP address and the 3rd IP address of mobile node device.
20. according to the first router described in claim any one of 13-17, it is characterised in that the first acquisition unit：

Specifically for obtaining session information at the mobile node device, the session information includes the mobile node device Identity tag, second IP address and the 3rd IP address.
A kind of 21. mobile node device, it is characterised in that including：

First receiving unit, the first IP distributed for after being attached in the first router, receiving the first router Location；

First transmitting element, for sending the first session data bag to the first router, to cause the first router The first session data bag is sent to communication node using first IP address as source IP address, and the movable joint is decorated Second IP address of the second router where before putting is sent to the communication node, and then the communication node is being connect After receiving the first session data bag, using second IP address as final source IP address, and by first session number The upper strata of the IP layers of communication node is delivered to according to bag and second IP address；

Second receiving unit, for receive that the first router sends using second IP address as purpose IP address the Two session data bags；Or

For receiving the second session data bag and second IP address that the first router is sent；

Unit is submitted, is received for using second IP address as final purpose IP address, and by second receiving unit The second session data bag and second IP address be delivered to mobile node device IP layers upper strata.
22. mobile node device according to claim 21, it is characterised in that first transmitting element, be specifically used for：

Using second IP address as source IP address, institute is sent to the first router using the 3rd IP address as purpose IP address The first session data bag is stated, the 3rd IP address is used for the IP address for representing the communication node.
23. mobile node device according to claim 21, it is characterised in that first transmitting element, be specifically used for：

Using first IP address as source IP address, institute is sent to the first router using the 3rd IP address as purpose IP address The first session data bag is stated, the 3rd IP address is used for the IP address for representing the communication node.
24. mobile node device according to claim 23, it is characterised in that also include：

Second transmitting element, for sending router request message to the first router, in the router request message With the first flag bit, first flag bit is the first numerical value, and first numerical value is used to represent the mobile node device The transmission of the first session data bag will be carried out using first IP address as source IP address.
A kind of 25. the first router, it is characterised in that including：

First processor, for distributing the first IP address for mobile node device；

First receiver, for obtaining the 3rd IP address of the second IP address and communication node, wherein second IP address It is what the mobile node device distributed for the second router where before the mobile node device；

First receiver, it is additionally operable to receive the first session data bag that the mobile node device is sent；

First transmitter, for being sent out using the first IP address that the first processor distributes as source IP address to the communication node The the first session data bag for sending first receiver to receive, and the second IP address that first receiver is obtained is sent to The communication node, to cause the communication node after the first session data bag is received, with second IP address For final source IP address, and the first session data bag and second IP address are delivered to the IP layers of communication node Upper strata；

First receiver, it is additionally operable to receive the communication node using the 3rd IP address as source IP address, with the first IP address For the second session data bag of purpose IP address；

First transmitter, it is purpose IP address by institute to be additionally operable to directly using the second IP address that first receiver obtains State the second session data bag that the first receiver receives and be sent to the mobile node device, to cause the movable joint to decorate Put after the second session data bag is received, using second IP address as final purpose IP address, and by described Two session data bags and second IP address are delivered to the upper strata of the IP layers of mobile node device；Or

First transmitter, be additionally operable to it is described send that first receiver receives to the mobile node device second Session data bag, and the second IP address that first receiver is obtained is sent to the mobile node device, to cause Mobile node device is stated after the second session data bag is received, using second IP address as final purpose IP Location, and the second session data bag and second IP address are delivered to the upper strata of the IP layers of mobile node device.
26. the first router according to claim 25, it is characterised in that first receiver, be specifically used for：

The mobile node device is received using second IP address as source IP address, using the 3rd IP address as purpose IP First session data bag of location.
27. the first router according to claim 26, it is characterised in that the first processor, be additionally operable to：

The the first session data bag received with the first IP address replacement first receiver of first processor distribution In source IP address field at the second IP address.
28. the first router according to claim 25, it is characterised in that first receiver, be specifically used for：

The mobile node device is received using first IP address as source IP address, using the 3rd IP address as purpose IP First session data bag of location.
29. the first router according to claim 28, it is characterised in that first receiver, be additionally operable to：

The router request message that the mobile node device is sent is received, is indicated in the router request message with first Position, first flag bit are the first numerical value, and first numerical value is used to represent that the mobile node device will be with described first IP address is the transmission that source IP address carries out the first session data bag；

First transmitter, it is additionally operable to after first receiver receives router request message, passes through agent binding New information and the communication node establish binding relationship, in the agent binding update messages with first flag bit, First IP address and the second IP address；

First receiver, it is additionally operable to receive the agency sent relative to first transmitter that the communication node is sent The agent binding response message of binding update messages, the agent binding response message are used to represent that the communication node agrees to institute Mobile node device is stated to conversate using first IP address as source IP address the transmission of packet.
30. according to the first router described in claim any one of 25-29, it is characterised in that first receiver,

It is additionally operable to obtain the session information of the mobile node device by a centralized device, the centralized device is used to remember Record the session information of the mobile node device, the session information includes the identity tag, described of the mobile node device Second IP address and the 3rd IP address.
31. according to the first router described in claim any one of 25-29, it is characterised in that first receiver,

It is additionally operable to obtain the session information of the mobile node device to the second router, the session information includes described The identity tag of mobile node device, second IP address and the 3rd IP address.
32. according to the first router described in claim any one of 25-29, it is characterised in that first receiver,

It is additionally operable to obtain session information at the mobile node device, the session information includes the mobile node device Identity tag, second IP address and the 3rd IP address.
A kind of 33. mobile node device, it is characterised in that including：

First receiver, for after being attached in the first router, receiving the first IP address of the first router distribution；

First transmitter, for the first router send the first session data bag, with cause the first router with First IP address is source IP address sends the first session data bag to communication node, and by the mobile node device Second IP address of the second router where before is sent to the communication node, and then the communication node is being received To after the first session data bag, using second IP address as final source IP address, and by first session data Bag and second IP address are delivered to the upper strata of the IP layers of communication node；

First receiver, is additionally operable to receive that the first router sends using second IP address as purpose IP address the Two session data bags；Or

It is additionally operable to receive the second session data bag and second IP address that the first router is sent；

First processor, received for using second IP address as final purpose IP address, and by first receiver The second session data bag and second IP address be delivered to mobile node device IP layers upper strata.
34. mobile node device according to claim 33, it is characterised in that first transmitter, be specifically used for：

Using second IP address as source IP address, institute is sent to the first router using the 3rd IP address as purpose IP address The first session data bag is stated, the 3rd IP address is used for the IP address for representing the communication node.
35. mobile node device according to claim 33, it is characterised in that first transmitter, be specifically used for：

Using first IP address as source IP address, institute is sent to the first router using the 3rd IP address as purpose IP address The first session data bag is stated, the 3rd IP address is used for the IP address for representing the communication node.
36. mobile node device according to claim 35, it is characterised in that first transmitter, be additionally operable to：

Router request message is sent to the first router, the first flag bit, institute are carried in the router request message It is the first numerical value to state the first flag bit, and first numerical value is used to represent that the mobile node device will be with first IP address The transmission of the first session data bag is carried out for source IP address.
37. a kind of conversational system of distributed mobile management, it is characterised in that including the first router, the second router, shifting Dynamic node apparatus and communication node, wherein,

The first router, for distributing the first IP address for mobile node device, obtain the second IP address and communication section 3rd IP address of point, the second router at place is the movement before second IP address is the mobile node device Node apparatus distribution, the first session data bag that the mobile node device is sent is received, using first IP address as source IP address sends the first session data bag to the communication node, and second IP address is sent into the communication section Point, the communication node is received using the 3rd IP address as source IP address, the second session using the first IP address as purpose IP address Packet, the second session data bag is directly sent to as purpose IP address by the movable joint using the second IP address and decorated Put, or the second session data bag is sent to the mobile node device, and second IP address is sent to described Mobile node device；

The mobile node device, for receiving the first IP address of the first router distribution, to the first router Send the first session data bag, receive that the first router sends using second IP address as the second of purpose IP address Session data bag, or the second session data bag and second IP address that the first router is sent are received, with institute It is final purpose IP address to state the second IP address, and the second session data bag and second IP address are delivered into shifting The upper strata of the IP layers of dynamic node apparatus；

The communication node, for receive the first router transmission the first session data bag after, with described second IP address is final source IP address, and the first session data bag and second IP address are delivered into communication node The upper strata of IP layers, using the 3rd IP address as source IP address, sent out using the first IP address as purpose IP address to the first router Send the second session data bag.